ShowTool LD vs ROE Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ShowTool LD
This app provides essential tools for lighting design and electrical calculations in theatre and film. It helps with beam angles, gel cutting, DMX addressing, power consumption, and network subnetting. Data syncs across devices via iCloud.
- Beam angle and throw calculations
- Gel cut and wastage estimation
- DMX universe/address translation
- Power consumption calculations
- Network subnetting tools
- iCloud data synchronization
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ShowTool LD is a comprehensive suite of Lighting Design and Electrics utilities for theatre and film. Beam Quickly calculate and visualise beam angles, throw and beam diameter. Gel Calculate the number of cuts and wastage from all major gel manufacturers and stock sizes. Choose from a selection of standard frame sizes, or define your own custom frame size. DMX Translate between universe/address and absolute address, discover how many fixtures will fit within a universe and calculate dip switch configuration. Power Simple power calculations in single and three phase configurations. Discover the total power consumption for your rig. Network What is a subnet? Easy tools to discover valid addresses for devices on your lighting network. Lists are kept in sync across all your devices using iCloud.
ROE Calculator
This application provides essential technical calculations for LED screens, including ballast, pixel, and power requirement analysis. It's designed to be the ultimate tool for LED technicians during on-site work and production preparation.
- Ballast calculation
- Pixel and resolution calculation
- Power requirement analysis
- Technical calculations for LED screens
- On-site and preparation tools
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ROE Visual is proud to announce the release of its groundbreaking ROE Calculator APP. This cutting-edge application is a complete upgrade of the previous ballast calculator and has added many new and exciting options to create essential technical calculations for your LED screens. With a comprehensive suite of tools that include ballast calculation, pixel and resolution calculation, power requirement analysis, and much more, the ROE Calculator APP will become the ultimate tool for LED technicians, whether on-site or in the preparation stages of production.
Screenshots
Verdict
The clearest difference is price: ROE Calculator at Free against ShowTool LD's $4.99. ROE Calculator also leads on review sentiment (100% vs 70%) and update cadence (every 6 weeks vs every 5 months). ShowTool LD's advantage is rating (4.7 vs 4.0) and ratings volume (6 vs 1). On ads, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
ROE Calculator is free to download; ShowTool LD costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ShowTool LD holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: ShowTool LD has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 70% of ShowTool LD's written reviews are positive against 100% of ROE Calculator's, so the app with the better star average is not the one people write more warmly about.
ShowTool LD ships an update every 5 months, ROE Calculator every 6 weeks. The most recent releases landed on September 14, 2026 and June 1, 2026 respectively.
| Parameter | ShowTool LD | ROE Calculator |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.7 (6 ratings) — better | 4.0 (1 ratings) |
| Positive reviews | 70.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 6 — better | 1 |
| Update frequency | Every 5 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 1 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Daniel Murfin | ROE Visual Co., Ltd |
Customer experience
ShowTool LD
ROE Calculator
In-app purchases
ShowTool LD
No in-app purchases
ROE Calculator
No in-app purchases
